Background and ObjectivesIn the last decade, the incidence of foodborne illness outbreaks and recalls connected with wheat flour and flour‐based goods infected with enteric bacteria such as Salmonella has grown. This study investigated the activity of sodium bisulfate (SBS) as an antibacterial agent against four different serovars of Salmonella enterica.FindingsThe dose‐dependent, anti‐Salmonella concentration of SBS revealed a minimum inhibitory activity (MIC) of 0.32%. At this concentration, SBS induced the production of reactive oxygen species (ROS) demonstrating that lysis of bacterial cells has occurred. SBS tempering (1.5% SBS, w/v) reduced wheat Salmonella load by 4.3 log CFU/g after 24h of tempering. Additionally, tempering at 0% (control) and 1.5% SBS (17% moisture, 24 h) showed similar (p > 0.05) flour functionality (rheology and composition) and baking characteristics (volume, texture, and crumb structure).ConclusionThese results suggest that SBS is a viable antibacterial tempering agent to reduce Salmonella contamination in wheat before milling.Significance and noveltyAcidic water tempering, as opposed to the traditional water tempering method, may result in milled products with improved microbiological quality.This article is protected by copyright. All rights reserved.